package com.project.interceptor;

import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * 登录拦截器
 */
public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //得到登录用户
        Object obj = request.getSession().getAttribute("loginUser");
        if (obj == null) {//没有登录，回到登录页
            response.sendRedirect("/login.html?errorInfo=noland");
            //没有通过不能继续访问目标资源
            return false;
        }
        //通过
        return true;
    }
}
